Boxplot
Abstract
Use to show the frequency of events within a group.
A boxplot is a distribution chart that represents groups of data by using quartiles.
Each box shows the middle quartiles of the data set. The "whiskers" show the remaining quartiles of the data set. Outliers (if you choose to include them) appear as points outside of the box and whisker plot.
When to use this tool
Use this chart when you want to show the frequency of events within a group.